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3 years ago

13

Could you guys help me?

2 answers:

LenKa [72]3 years ago

5 0

Answer:

15.6 feet

Step-by-step explanation:

I have no time to explain

kherson [118]3 years ago

3 0

The answer will be 15.6 feet

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Which expressions are equivalent to the one below. Check all that apply. 16^x

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2 years ago

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2 years ago

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Give me brainless cuz I according to me it's 24

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3 years ago

<img src="https://tex.z-dn.net/?f=y%20%3D%20x%20%7B%7D%5E%7B2%7D%20-%209x%20%2B%2014" id="TexFormula1" title="y = x {}^{2} - 9x

svetoff [14.1K]

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a = - $\frac{9}{2}$ , b = - $\frac{25}{4}$

Step-by-step explanation:

To obtain the required form use the method of completing the square

add/ subtract ( half the coefficient of the x- term)² to x² - 9x

y = x² + 2(- $\frac{9}{2}$ )x + $\frac{81}{4}$ - $\frac{81}{4}$ + 14

= (x - $\frac{9}{2}$ )² - $\frac{81}{4}$ + $\frac{56}{4}$

= (x - $\frac{9}{2}$ )²- $\frac{25}{4}$ ← in the form (x + a)² + b

with a = - $\frac{9}{2}$ and b = - $\frac{25}{4}$

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3 years ago

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